HP OpenVMS Systems

Intermittent cluster drive off-line errors?

Recently created a cluster including a VAX 4500 running VMS 7.2 MSCP-serving
its SCSI-attached drives and a VAXStation 4000-90 satellite node (also at VMS
7.2). Occasionally, when running our primary application from the satellite
node, we will get appli
cation errors. At those times, when I do a $ dir/siz/dat on the directory
containing the EXE's, some of the files return their information, others just
show "medium is off-line". The application continues to run fine from the VAX
4500 (and a $dir/siz/da
t from there runs as-expected on the EXE directory). This has only happened on
the drive that serves the EXE's. Note: several of these EXE's are installed
images. I can un-install the images and dismount the drive from the satellite
node, re-mount it a
nd re-install the images and the "medium off-line" errors go away. Again, I
don't think we have hardware issues since everything is fine from the primary
voting cluster node's point of view. Is there some issue with the speed of
MSCP requests across a 1
0MB Ethernet connection, or might it have something to do with the installed
images coming from that disk? Thx.

The Answer is :

Please contact the Compaq Customer Support Center, as rather
more information will be required -- this could be a problem
with hardware, software, network, or firmware. Specifics on
the particular disk device involved will be of interest, as
well.